Aiming at not considering the seismic fortification of the cavity masonry structures, a method of cavity walls with HPFL strips composite ring beam and constructional column is proposed. Six cavity walls with HPFL strips composite ring beam and constructional column and six comparative walls are tested under low cycle reversed loading to study the effect of the strengthening method.Comparison of the failure pattern, ultimate strength,skeleton curve and stiffness degradation of the strengthened and the comparative walls shows the beneficial effects of the composite ring beam and constructional column.The test results show that seismic capability, ductility and energy dissipating capability of the cavity walls with HPFL strips composite ring beam and constructional column are increased greatly. Based on finite element calculation, the various influence factors are analyzed, such as HPFL strips composite constructional column dimension, composite ring beam dimension, composite constructional column spacing and constructional column setting of cavity walls. Some specific design suggestions on HPFL strips composite ring beam and constructional column are proposed.